IDAHO (MT)

Nature"Invasion of the Giant Pythons"
There are tens of thousands of Burmese pythons thriving in Florida's Everglades National Park - some released by pet owners and others set free by storms or other disasters. NATURE follows scientists and snake hunters as they study the growing crisis and work on strategies to protect the park, its native residents and surrounding habitats from the snakes.G

8:00 pm

NOVA"Extreme Cave Diving"
Cave diver and environmental anthropologist Kenny Broad heads an interdisciplinary team of climatologists, paleontologists and anthropologists into underwater caves, or blue holes, formed during the last ice age. Broad is investigating the hidden history of Earth's climate as revealed by finds in this "alternate universe."G

9:00 pm

Cave People of the Himalaya
Everest climber Pete Athans belays archaeologist Mark Aldenerfer down an 800-foot-cliff to a cave 700 feet down from the top. The two of them are on a mission in the world's highest mountains to find ancient mummies and uncover secrets hidden thousands of years in these cliff-top graves.G

10:00 pm

Wild Africa"Savannah"
The newest of all the environments, savannah snakes its way across Africa hemmed in between forests and deserts. A mixture of open woodlands and vast grassy plains, savannah is home to a variety of big cats as well as the greatest herds of wild grazing mammals on Earth today. Part 2 of 6G